<template>
  <el-container>
    <!-- 头部区域 -->
    <el-header>
      <div @click="goHome(currentPathId)" class="cursor">
        <img src="../assets/top.jpg" width="60px" height="56px" />
        <span>电商后台管理系统</span>
      </div>
      <el-button type="info" round @click="logout">退出</el-button>
    </el-header>
    <!-- 页面主体区域 -->
    <el-container>
      <!-- 侧边栏区域 -->
      <el-aside :width="isCollapse ? '64px' : '200px'">
        <div class="toggleButton" @click="toggleButtonHandler">|||</div>
        <el-menu
          ref="elMenuRef"
          background-color="#333744"
          text-color="#fff"
          active-text-color="#409EFF"
          unique-opened
          :collapse="isCollapse"
          :collapse-transition="false"
          router
          :default-active="activePath"
        >
          <el-submenu
            :index="item.id + ''"
            v-for="item in menuList"
            :key="item.id"
          >
            <template slot="title">
              <i :class="iconObj[item.id]"></i>
              <span>{{item.authName}}</span>
            </template>
            <el-menu-item
              :index="'/'+subItem.path"
              v-for="subItem in item.children"
              :key="subItem.id"
              @click="saveNavPath('/'+subItem.path,item.id)"
            >
              <template slot="title">
                <i class="el-icon-menu"></i>
                <span>{{subItem.authName}}</span>
              </template>
            </el-menu-item>
          </el-submenu>
        </el-menu>
      </el-aside>

      <!-- 右侧内容主体 -->
      <el-main>
        <div>
          <router-view></router-view>
        </div>
      </el-main>
    </el-container>
  </el-container>
</template>

<script>
export default {
  data() {
    return {
      menuList: [],
      iconObj: {
        "125": "iconfont icon-users",
        "103": "iconfont icon-tijikongjian",
        "101": "iconfont icon-shangpin",
        "102": "iconfont icon-danju",
        "145": "iconfont icon-baobiao"
      },
      isCollapse: false,
      activePath: "",
      currentPathId: ""
    };
  },
  created() {
    this.getMenuList();
    this.activePath = window.sessionStorage.getItem("navPath");
  },
  methods: {
    saveNavPath(navPath, id) {
      window.sessionStorage.setItem("navPath", navPath);
      this.activePath = navPath;
      this.currentPathId = id + "";
    },
    toggleButtonHandler() {
      this.isCollapse = !this.isCollapse;
    },
    async getMenuList() {
      const { data: res } = await this.$http.get("menus");
      if (res.meta.status !== 200) {
        return this.$message.error(res.meta.msg);
      } else {
        this.menuList = res.data;
      }
      // console.log(res);
    },
    logout() {
      window.sessionStorage.clear();
      this.$router.push({
        path: "/login"
      });
    },
    goHome(cid) {
      this.$router.push({
        path: "/home"
      });
      console.log(cid);
      console.log(this.$refs.elMenuRef);
      this.$refs.elMenuRef.close(cid);
      this.currentPathId = "";
      this.activePath = "";
    }
  }
};
</script>

<style lang='less' scoped>
.el-container {
  height: 877px;
}

.el-header {
  background-color: #373d41;
  display: flex;
  justify-content: space-between;
  padding-left: 0;
  align-items: center;
  // position: fixed;
  color: #fff;
  font-size: 25px;

  > div {
    display: flex;
    align-items: center;
    span {
      margin-left: 15px;
      letter-spacing: 0.1em;
    }
  }
}

.el-aside {
  background-color: #333744;

  .el-menu {
    border-right: none;
  }
}

.el-main {
  background-color: #eaedf1;
}

.iconfont {
  margin-right: 10px;
}

.toggleButton {
  background-color: #4a5064;
  text-align: center;
  font-size: 10px;
  color: #fff;
  line-height: 24px;
  letter-spacing: 0.2em;
  cursor: pointer;
}

.cursor {
  cursor: pointer;
}
</style>